[PATCH] PCI: Add ACS quirk for Cavium ThunderX 2 root port devices

From: Shannon Zhao
Date: Fri Jul 19 2019 - 01:12:23 EST


From: Shannon Zhao <shannon.zhao@xxxxxxxxxxxxxxxxx>

Like commit f2ddaf8(PCI: Apply Cavium ThunderX ACS quirk to more Root
Ports), it should apply ACS quirk to ThunderX 2 root port devices.

Signed-off-by: Shannon Zhao <shannon.zhao@xxxxxxxxxxxxxxxxx>
---
drivers/pci/quirks.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 28c64f8..ea7848b 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -4224,10 +4224,12 @@ static bool pci_quirk_cavium_acs_match(struct pci_dev *dev)
* family by 0xf800 mask (which represents 8 SoCs), while the lower
* bits of device ID are used to indicate which subdevice is used
* within the SoC.
+ * Effectively selects the ThunderX 2 root ports whose device ID
+ * is 0xaf84.
*/
return (pci_is_pcie(dev) &&
(pci_pcie_type(dev) == PCI_EXP_TYPE_ROOT_PORT) &&
- ((dev->device & 0xf800) == 0xa000));
+ ((dev->device & 0xf800) == 0xa000 || dev->device == 0xaf84));
}

static int pci_quirk_cavium_acs(struct pci_dev *dev, u16 acs_flags)
--
1.8.3.1